1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
andre [41]
3 years ago
10

Four students took a national standardized test for which the mean was 500 and the standard deviation was 100. If a student’s z-

value was 1.75 on the test, what was the student’s score?
Mathematics
2 answers:
murzikaleks [220]3 years ago
3 0

z = (x - 500) / 100

1.75 = (x - 500) / 100

175 = x - 500

675 = x

g100num [7]3 years ago
3 0

Answer:

A, 675

Step-by-step explanation:

You might be interested in
Simplify the expression 6x+12y+5+2y+8 what is the coefficient of y and what is the constant
frez [133]
We want to find the coeficient of the y terms when added together so find all the y terms

+12y and +2y
we add them together
12y+2y=(12+2)y=(14)y=14y
coeficient is 14


the constant is the number that is set already or the number that doesn't have it multiplied by a placeholder exg. 4 is a constnat but 4x is not so find the constants
+5 and +8
we add
5+8=13
the constant is 13


y coeficient=14
constant=14
5 0
3 years ago
Read 2 more answers
A man earned x pesos in 10 days and spent y pesos during each of those days. Write an expression to determine how many pesos he
Vsevolod [243]

Answer:  \dfrac{x}{10}-y

Step-by-step explanation:

Given : A man earned x pesos in 10 days and spent y pesos during each of those days.

i.e. Total earning in 10 days = x

Earning per day =\dfrac{x}{10}    [By unitary method]    (1)

Money spent per day =y      (2)

We know that

\text{Savings = Money earned - Money spent}

i.e. Subtract (2) from (1), we get

\text{Savings = }\dfrac{x}{10}-y

Hence, the expression to determine how many pesos he saved per day will be:-

\dfrac{x}{10}-y

3 0
3 years ago
Solve the system of equations. y = 2x y = x 2 – 15
inn [45]

Answer:

D. (–3, –6) and (5, 10)

Step-by-step explanation:

The system has equations:

y=2x...(1)

and

y=x^2-15...(2)

Equate both equations;

x^2-15=2x

Rewrite in standard form:

x^2-2x-15=0

We factor to obtain:

(x+3)(x-5)=0

By the zero product principle;

(x+3)=0,(x-5)=0

\implies x=-3,x=5

When x=-3, y=2(-3)=-6

This yields the ordered pair (-3,-6).

When x=5, y=2(5)=10

This yields the ordered pair (5,10).

The correct choice is D.

8 0
3 years ago
1. What is the relationship of ratios and proportions? Give an example of a proportion.
shepuryov [24]
Ratio is the comparison of sizes of two quantities of the same unit. Proportions are the equality of two ratios. A/b =c/d
3 0
3 years ago
Line MN passes through points M(4, 3) and N(7, 12). If the equation of the line is written in slope-intercept form, y = mx + b,
expeople1 [14]
For finding the value of b, we must consider that Line MN passes through points M(4, 3) and N(7, 12). With this condition y = mx + b, can be written 3=4m+ b (because line passes through M(4,3) ) and 12=7m+b, b ( because line passes through M(7,12)). We have a system of equation 4m+ b=3 7m+b=12 For solving this, 4m+b- (7m+b)= 3-12, it is equivalent to -3m= -9 and then m=3, if m=3 so 4x3 +b =3 implies b= 3 -12= -9, so the value of b= -9 <span>
</span>
3 0
3 years ago
Read 2 more answers
Other questions:
  • There are 158 birds on the endangered species list in some year. this is 16 more than twice the number of reptiles on the list.
    6·1 answer
  • James has 3 hats, 2 pairs of shorts, and 5 shirts to chose from. If he wears exactly 1 of each item, how many different combinat
    7·1 answer
  • Cole was driving at 52 miles per hour and drove for 6 hours. How far did cole go?
    7·1 answer
  • HELP !!!!! Let f(x) = 2x, g(x) = 2x2 – x, and h(x) = 3x. Lola finds the composition [f o g o h](x) as shown below. What error di
    13·2 answers
  • karla is making a dress. She paid $13.47 for 3 yards of fabric. what was the unit rate she paid per yard
    5·1 answer
  • the brightness of the illumination of an object varies inversely as the square of the distance from the object to the source of
    5·1 answer
  • One manufacturer boxes screws so that each box weighs the same no matter what size the screws are. The graph shows the amount of
    6·1 answer
  • What is a rational number between -1 over 6 and -2 over 6?
    11·1 answer
  • What is the measure of Angle<br> 1 and Angle 2?
    14·1 answer
  • What is the slope of the line whose equation is 2x−4y=10?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!